There are 20 chips in total.
These are from a sample batch order, which claims 1 or two broken chips may be included.
their website for tech specs
http://ehash.com/shop/Price 0.25 btc (cheaper per chip than if you ordered 2500 from them)
Shipping US only, free (will be ups ground or something else cheap)
Edited: Apparently noone was interested in trading.